危险化学品目录中CAS号指什么

1。 CAS no. (number): 不是危险品而已， 而是所有的化学品都有的一个编号， 便于数据库的查找。

CAS registry numbers are unique numerical identifiers for chemical compounds, polymers, biological sequences, mixtures and alloys. They are also referred to as CAS numbers or CAS RNs.

Chemical Abstracts Service (CAS), a division of the American Chemical Society, assigns these identifiers to every chemical that has been described in the literature. The intention is to make database searches more convenient, as chemicals often have many names. Almost all molecule databases today allow searching by CAS number.

As of Nov 2, 2005, there were 26,901,696 substances in the CAS registry — the current number is published here. About 4,000 new numbers are added each day.

CAS registry number is separated by hyphens into three parts, the first consisting of up to 6 digits, the second consisting of two digits, and the third consisting of a single digit serving as a check digit.

2。 UN no. 才是危险品特有的。 运输都要有这号码。

UN numbers or UN IDs are four-digit numbers that identify dangerous goods hazardous substances and articles (such as explosives, flammable liquids, toxic substances, etc.) in the framework of international transport. Some hazardous substances have their own UN numbers (e.g. acrylamide has UN2074), while sometimes groups of chemicals or products with similar properties receive a common UN number (e.g. flammable liquid, not otherwise specified, have UN1993). A chemical in its solid state may receive a different UN number than the liquid phase if their hazardous properties differ significantlysubstances with different levels of purity may also receive different UN numbers.

UN numbers range from UN0001 to about UN3500 and are assigned by the United Nations Committee of Experts on the Transport of Dangerous Goods. They are published as part of their Recommendations on the Transport of Dangerous Goods, also known as the Orange Book. These recommendations are adopted by the regulatory organization responsible for the different modes of transport.

NA numbers (North America), also known as DOT numbers are issued by the United States Department of Transportation and are identical to UN numbers, except that some substances without a UN number may have an NA number. These additional NA numbers use the range NA8000 - NA9999.

Associated with each UN number is a hazard identifier, which encodes the general hazard class and subdivision (and, in the case of explosives, their compatibility group). For instance, the hazard identifier of acrylamide is 6.1 and the one of cigarette lighters is 2.1. If a substances poses several dangers, then subsidiary risk identifiers may be specified. It is not possible to deduce the hazard class(es) of a substance from its UN number: they have to be looked up in a table.

The hazard classes and their divisions are:

Class 1: Explosives

Division 1.1: Substances and articles which have a mass explosion hazard

Division 1.2: Substances and articles which have a projection hazard but not a mass explosion hazard

Division 1.3: Substances and articles which have a fire hazard and either a minor blast hazard or a minor projection hazard or both, but not a mass explosion hazard

Division 1.4: Substances and articles which present no significant hazard

Division 1.5: Very insensitive substances which have a mass explosion hazard

Division 1.6: Extremely insensitive articles which do not have a mass explosion hazard

Class 2: Gases

Division 2.1: Flammable gases

Division 2.2: Non-flammable, non-toxic gases

Division 2.3: Toxic gases

Class 3: Flammable liquids

Class 4: Flammable solidssubstances liable to spontaneous combustionsubstances which, on contact with water, emit flammable gases

Division 4.1: Flammable solids, self-reactive substances and solid desensitised explosives

Division 4.2: Substances liable to spontaneous combustion

Division 4.3: Substances which in contact with water emit flammable gases

Class 5: Oxidizing substances and organic peroxides

Division 5.1: Oxidizing substances

Division 5.2: Organic peroxides

Class 6: Toxic and infectious substances

Division 6.1: Toxic substances

Division 6.2: Infectious substances

Class 7: Radioactive material

Class 8: Corrosive substances

Class 9: Miscellaneous dangerous substances and articles

2021年我国新列管的易制毒化学品有几种

6种。分别是准3-氧－2-苯基丁酸甲酯、3-氧－2-苯基丁酰胺、2-甲基－3-[3,4-(亚甲二氧基）苯基］缩水甘油酸、2-甲基－3-[3,4-(亚甲二氧基）苯基］缩水甘油酸甲酯、苯乙腈和γ－丁内酯。

相关信息

1、3-氧－2-苯基丁酸甲酯、3-氧－2-苯基丁酰胺、2-甲基－3-[3,4-(亚甲二氧基）苯基］缩水甘油酸和2-甲基－3-[3,4-(亚甲二氧基）苯基］缩水甘油酸甲酯的管理。

3-氧－2-苯基丁酸甲酯又名α－乙酰基苯乙酸甲酯、α－苯乙酰乙酸甲酯，简称MAPA，化学文摘登记号即CAS号为16648-44-5，海关编码29183000.21；3-氧－2-苯基丁酰胺又名α－乙酰基苯乙酰胺、α－乙酰乙酰苯胺，简称APAA，CAS号为4433-77-6，海关编码29242990.61。

2-甲基－3-[3,4-(亚甲二氧基）苯基］缩水甘油酸又名3,4-亚甲基二氧苯基－2-丙酮缩水甘油酸，CAS号为2167189-50-4，海关编码29329990.93；2-甲基－3-[3,4-(亚甲二氧基）苯基］缩水甘油酸甲酯又名3,4-亚甲基二氧苯基－2-丙酮缩水甘油酯，CAS号为13605-48-6，海关编码29329990.93。该四种物质按照《条例》附表第二类易制毒化学品管理，其生产、经营、购买、运输和进出口活动执行非药品类易制毒化学品的有关规定。

2、苯乙腈和γ－丁内酯的管理。

苯乙腈，CAS号为140-29-4，海关编码29269090.81；γ－丁内酯，CAS号为96-48-0，海关编码29322090.31。该两种物质按照《条例》附表第三类易制毒化学品管理，其生产、经营、购买、运输和进出口活动执行非药品类易制毒化学品的有关规定。

本公告自2021年9月20日起施行。

1.查询CAS登记号，中文名、英文名及其别名，分子量、分子式，熔点、沸点，部分有性质介绍。

2.可以输入中文名称、英文名称、CAS编号或者分子式进行查询。

3.部分记录有多个中文名称和多个英文名称。

4.关键词、字的前后顺序会影响检索结果，例如在中文名称中检索“胺 乙基”和“乙基 胺”，检索结果会不同： 检索“胺 乙基”时，会检索到二乙胺基乙基纤维素，但不会检索出四乙基乙二胺。 检索“乙基 胺”时，会检索到四乙基乙二胺，但不会检索出二乙胺基乙基纤维素。

5.使用CAS编号查询时需输入完整的CAS编号，包括"-"，如“100-00-5”。

【拓展资料】

一、CAS号是什么？

1.cas编号的中文全称为“化学物质登录号”，由一组数字组成。就像我们都有自己唯一的身份证一样，每一种已经发现的化合物都有自己唯一对应的编号。 2.这种编号的出现，可以弥补化学物质命名不统一而引起的种种麻烦。比如对于同一物质，各个国家的命名方法不同，有很多物质既有化学名称，又有俗名。 3.这样一来，经常发生数据不全的现象。而cas编号唯一对应一种物质，很容易解决这个问题。只要知道这个物质的cas编号，就可以很快，很轻松地查询最全面的资料。 4.下面简单说一下cas编码的组成。由六位到九位的数字组成。其一般形式为【####aa-aa-a】。其中#表示可有可无的数字，a表示必须有的数字。也就是说最前面的数字位数是不一定的，有些物质是两位，最多可达六位。然而无论是什么化合物，必需至少有五位数组成。在原则上，数字大小可以反映物质发现的早晚，数字越大，表示发现得越晚。现在已有2000万余种物质有自己的cas编号。 5.cas编号最早出现于美国化学摘要服务社（chemical abstracts service，CAS即为该服务社的缩写)出版的《化学摘要》，与其同时研发的网上检索系统，后来凭借无比的优越性，其他出版社也采用cas编码来标明化学物质，现在海关化学物品进出口，也要登录该资料。